Overhaul of Fuel Injection Drive Couplers

Table 6-46. Fuel Injection Pump Drive Couplers, Fuel Injector Nozzles,

Piston Oiler Nozzles and Time Totalizing Meter

Disassembly

Cleaning

Component

Repair

Assembly

Fuel Injection

Pump Drive

Splined Coupler

Diaphragm

Coupler

Fuel Injector

Para 4-26,

Nozzles

4-27, Figs.

4-169, 4-168

4-167

Piston Oiler

Nozzle

Time Total-

izing Meter

6-256

6-67.

Overhaul

Fuel

Injection

Drive

Couplers

a. Disassembly. Disassemble the drive splined

coupler following instructions which accompany

figure

6-252.

Disassemble

drive

diaphragm

coupler

following

instructions

which

accompany

figure 6-253.

Disassemble

1. Refer to figure 4-59 and 4-61 to remove front coupler

sleeve and hub from injection pump.

2. Separate front coupler sleeve (A) and injection pump

hub (B).

3. Remove quad ring (C) from coupler sleeve.

4. Remove Woodruff key (D) from pump shaft.

Note. Keep front coupler sleeve and hub

together. Place them with the rear coupler sleeve

and drive shaft hub on rear fan drive housing.

Check identification marks made during engine

disassembly (fig. 4-52) to make sure these parts

match. These parts are mated and must be kept

together.

Assemble

1. Position Woodruff key (D) in pump shaft.

2. position quad ring (C) in internal groove of front

coupler sleeve (A).

3. Install injection pump hub (b) in coupler sleeve.

4. Refer to figure 4-63 to install hub and sleeve on pump

shaft and install preformed packing.

Figure

6-252.

Disassembling

assembling

fuel

injection

pump

drive

splined

coupler.

6-215